Description of algorithm
Full domain
American sector
European sector
Asian sector
GODAE regions
  Ice concntr, edge pos
  Contingency tables

Validation of sea ice concentration - GODAE regions

Bulletin date: 2024-01-04

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2024-01-08

Best estimate

Forecast

Arctic Deep Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 8 0 0 0 0 0 0
OW 0 5 15 12 0 0 0 0
VODI 0 0 0 45 1 0 0 0
ODI 0 0 0 9 28 1 0 0
CDI 0 0 0 1 48 92 22 0
VCDI 0 0 0 0 1 155 5982 30477
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 13 11 3 0 0 0 0
VODI 0 0 4 32 0 0 0 0
ODI 0 0 0 26 8 1 0 0
CDI 0 0 0 6 68 95 153 0
VCDI 0 0 0 0 2 152 5851 30477

Queen Elisabeth Islands:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 16 860 2243
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 16 860 2243

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 9 9 20
VCDI 0 0 0 0 177 385 2158 7220
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 7 6 7
VCDI 0 0 0 0 177 387 2161 7233

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 1 22 0 0
VCDI 0 0 0 0 207 1230 2549 1644
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 3 16 0 0
VCDI 0 0 0 0 205 1236 2549 1644

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 7224
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 7224

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 5299
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 5299

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 10 0 0 0 0 0 0
OW 0 42 11 1 0 0 0 0
VODI 0 2 7 21 0 0 0 0
ODI 0 4 3 31 12 0 0 0
CDI 0 0 2 59 78 111 3 0
VCDI 0 0 0 56 166 1379 3593 726
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 2 0 0 0 0 0 0
OW 0 25 0 0 0 0 0 0
VODI 0 21 9 2 0 0 0 0
ODI 0 5 7 28 3 0 0 0
CDI 0 4 4 18 43 15 3 1
VCDI 0 1 3 120 210 1475 3593 725

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3577 3833 61 13 0 0 0 0
OW 0 174 96 165 0 0 0 0
VODI 0 21 26 293 121 0 0 0
ODI 0 0 3 83 360 15 0 0
CDI 0 0 0 27 199 483 42 0
VCDI 0 0 0 4 57 506 1163 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3577 3735 80 60 0 0 0 0
OW 0 192 62 204 15 0 0 0
VODI 0 79 17 182 142 0 0 0
ODI 0 22 22 53 233 37 0 0
CDI 0 0 5 52 225 382 92 0
VCDI 0 0 0 34 122 585 1113 0

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4125 3177 62 34 0 0 0 0
OW 0 102 98 160 3 0 0 0
VODI 0 6 11 166 84 0 0 0
ODI 0 0 2 51 189 18 0 0
CDI 0 0 0 32 177 589 55 0
VCDI 0 0 0 0 6 847 1678 24
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4125 3096 63 65 2 0 0 0
OW 0 140 57 150 32 0 0 0
VODI 0 42 25 85 110 0 0 0
ODI 0 7 27 44 123 21 0 0
CDI 0 0 1 99 172 407 79 0
VCDI 0 0 0 0 20 1026 1654 24

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8095 3193 68 130 19 0 0 0
OW 0 97 32 102 31 0 0 0
VODI 0 4 22 112 55 8 0 0
ODI 0 0 0 45 79 12 0 0
CDI 0 0 0 17 280 237 1 0
VCDI 0 0 0 0 17 270 61 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8095 3134 62 134 30 0 0 0
OW 0 115 14 81 37 3 0 0
VODI 0 40 29 75 46 16 0 0
ODI 0 5 16 69 36 15 0 0
CDI 0 0 1 47 293 176 7 0
VCDI 0 0 0 0 39 317 55 0

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 302 24 12 0 0 0 0
OW 0 75 28 58 0 0 0 0
VODI 0 1 6 104 11 0 0 0
ODI 0 0 0 38 47 1 0 0
CDI 0 0 0 22 159 183 81 0
VCDI 0 0 0 0 177 395 3123 956
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 254 24 17 0 0 0 0
OW 0 90 11 39 0 0 0 0
VODI 0 33 18 61 4 0 0 0
ODI 0 1 4 51 44 4 0 0
CDI 0 0 1 60 142 154 385 9
VCDI 0 0 0 6 204 421 2819 947

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 93 90 0
VCDI 0 0 0 0 8 1109 4804 2434
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 7 0
CDI 0 0 0 0 0 70 115 0
VCDI 0 0 0 0 8 1132 4772 2434

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11085 1440 7 5 0 0 0 0
OW 456 249 68 63 0 0 0 0
VODI 36 100 28 161 15 0 0 0
ODI 5 7 8 63 88 5 0 0
CDI 1 0 0 46 144 218 49 0
VCDI 0 0 0 8 305 734 352 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10936 1342 3 2 0 0 0 0
OW 351 138 33 37 0 0 0 0
VODI 258 76 40 108 2 0 0 0
ODI 37 104 4 77 50 13 0 0
CDI 1 95 13 55 169 204 99 0
VCDI 0 41 18 67 331 740 302 0


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